Valve for internal-combustion engines.



0. ERNST. VALVE FOR NTENAL GOMBUSTION ENGINES. APPLIGATIOH FILED AIi.9. 1912.

Patented Jan. 6, 1914.

ATTORNEYS invrTn .STATES PATENT ernten erro renner, or retiennent, :New Zon-1a,

vente ren r-Nrrmmncomsusrron enemies.

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h To all whom, it may concern.

` Be it known that l, U'rro ERNST, a oitizen of the United States, and a resident of La rchmont, in the county of Westchester 5 and State of New `York, have invented a new and Improved Valve for internal-Com bustion Engines, of which the following is a full, clear, and exact description.

A' My invention relates to a form of valve for internal combustion engines, and is referably of the rotary type; and the o ject thereof is to provide an improved construction of this sort in which all of the defects inherent in rotary valves for gasolene m0- ]5 tors are eliminated.

To this end I construct my improved valve'with spindles .that are so mounted as to have a certain degree of lateral Lplay in the bearings which receive them, and I proto vide resilient means to hold the valve against its seat without opposing any ape preciable friction to the movement of the same. rllhis arrangement of parts allows for 4the necessary expansion of the valve in 2e the operation of the motor without permit ting leakage or in any way interfering with the efficiency of the worlringof the valve in practice.

Reference is to be had to the accompany ing drawings forming a part of this specification, in which the same characters of reference indicate the same parts inl both the views.

\ Figure 1 is a longitudinal sectional view,

partly in elevation, showing the manner in which my valve is mounted in operative position in the framework of a four-cylinu der motor; and Fig. 2 is a cross sectional` view showing a casing for a pair of valves,

te one for controlling,r the supply of fuel to the' cylinders and the, other for controlling the exhaust of the same.

Referring particularly `to the drawings the numeral l'represents the ,framework of .te a four-cylinder motor that is preferably of the four-cycle type, and 2 are the cylinders thereof provided with the usual Water jackets 3; 'lfhese cylinders are yeach provided -with inlet and u'tlet perte 4.-, shown t0 :is-being formed lon the tops thereof; buty 'obviously I may form thesey ports in the sides of the cylinders ynear ,the tops, and

the valves extend along'the sides nearthel tops accordingly. `In the form shown ,inthe drawings, however, these valves are i mounted en the tops of the cylinders, 1and deceleration of )Letters Patent. application nletlfaprtl d, tlf. Serial No. @589,57`t,

.ated at one-fourth 17 is a shoe extending longitudinal y lin its oppposite face, and these 'recesses rew latented dan, ttvllit.

extend from one cylinder of the row to the 'last one. Y

The edges of the ports i are elevated, forming seats 5, and 6 is a casing' in which is mounted the valve body 7. rlhis valve body is in the form of a hollow rotating cylinder having; four pairs 'ports 8, 9, l0 and 1l extending through its walls, the members of each pair of ports being located at diametrically opposite points, and the pairs of ports beingr spaced 900 apart around the circumference ofthe valve, and in such relative position as to make the first, second, fourth and third operate in succese sion in the order named.

The valve body is provided with spindles 12 extending from the ends thereof; and i3 represents a screw plug; which closes one end of the valve casing. This bushing has a bearing openingl ifi, and a similar opening l-/l is provided in the opposite end of the casing. These openings are of slightly greater diameter than the valve spindles 12, so as to give the valve body a certain amount of lateral play, and one of the spindles 12 projects beyond the adjacent end of the casing 6, and receives a driving: gear l5, by means of which this valve is operthe speed of the crank titi` s 5 shaft.

16 represents a removable plate for closing the top of the hollow7 valve casin 6; and of the valve' and provided with transversely-extending lugs on the .face adjacent the valves 7. These lugs are arranged in pairs,`

`the pairs being located at suitable distances apart; and between thev members of each, pair of lugs 18 are rollers 1.9 mounted on spindles which enter suitable bearing openings in' theselugs. rlliese rollers bear upon vthe outer surface of the valve, but oppose no friction to the" rotation thereof.

lThe shoegl7 has a number of recesses @il roo ceive the reduced ends 2,1 of a correspond ing number of pins 22,'and have screwthreaded engagementwith the movable top 16 on the valve casing, and are heldin place bv means of lock nuts 23. The pins 22 are also provided with spirahsprings 24, coiled around the ,Same inslde of the valve casing and bearing, upon the shoe 17, the inner, face of the plate 16 having suitable recesses y'i111 to receive the-5e springs. .i

The numeral 25 representssuitableA wash,-

les

ers between the ends of the valve body and the ends of the valve casing to prevent leal;- agc; and 26 represents suitable fastening devices to hold thc plate 1 in place. The valve casing has a pair of openings in its sides, shown at 2T and 2S, through which the fuel is supplied or the exhaust discharged, as the case may be.

According to my invention the same type of valve is vused for both the inlet and exhaust side oi the engine, and the valve casA ing (l will be provided Witn a longitudinal partition Q9 to separate one valve trom the other. ln Fig. 2 only one valve is shown, rlh@ valve is put in place through the open end of the casing before the plug l?, is screwed on, and the screw-threaded plug 13 is provided with polygonal projection so "hat it can be screwed up to press the wash` ers snugly against the. ends of the valve and prevent any leakage around the ends through the bearing openings 14.

The valve body 7 is held iirmly against tne seats 5 of the ports fl by means of the springs 2st pressing the shoe 17 against ,the opposite side oi" the valve, the valve moving laterally on account of the play ailorded by the openings le, into a snug-fitting position. These springs are ci course made of the proper strength to hold the valve to its seat at all times; but on account of the anti` friction rollers i9, the rotation orP the valve is not in v obstructed.

The manl of operation of my invention Will be apparent.

ln the case of the inlet valve the gaseous fuel will be supplied to the inside of onehalt et the valve casing and pass through the ports 8, 9, l0 and ll to the interior of the valve body. As tast as one of its ports comes registry with one of the ports Li, this fuel will enter the corresponding cylinder, and as the valve rotates at one fourth the engine speed, communication will be tablished ."'oetv-,feen each cylinder and the source oiA fuel supply twice for every revolution of the valve. ln the case of the exhaust valve the uel will be discharged in a corre spondn manner.

twi be seen that the springs 2d are lo cated outside of the direct path or" the incoming and outgoing gases. The degree of snugness with which the valve fitsl in place can be regulated by turning the screw plug 13; While the springs 2s will always hold the valve snugly against the seats 5, While at the saine time allowing for expansion at'- ter the motorhea'ts up in the course ot its operation. Thus, the tendency of the valve to stick is practically eliminated; and it will be noted that I obtain this result Withoutv increasing the friction or. Wear upon the valve..

My improved valve is thus capable of operatingas,long-as other valves of this type i,css,sie

which do not embody the advantages herein set forth.

l wish to have it understood that the above description and accompanying drawings are illustrative only, sett-ing forth but one embodiment of my invention; but l do not wish to be limited to the details thereof, except in so far as indicated in the accompanying claims, reserving to myself the right to vary the arrangement of the parts as far as is permitted by the scope and spirit of my invention.

Having thus described my invention, l claim as new and desire to secure by Letters Patent:

l. ln an internal combustion engine, the combination of a valve casing, a rotary valve body located therein, spindles projecting tl'ierefrorn and mounted in the walls of the casing, p: citing means carried by said spindles for the ends of the valve'body, said casing having a screwsthreaded opening at one end ot said valve body, and an adjustable plug for said opening to cause the end walls of the casing to have snug engagement with the packing adjacent the ends of the valve body.

2. ln an internal combustion engine, the combination of a valve casing, a rotary valve body mounted in said casing, said valve body having spindles projecting from its opposite ends, said spindles being mounted in the nfalls ot the casing, said Walls lia-ving bearings for said spindles or greater size than said spindles, to enable the' valve to nave side play for purposes of adjustment, and means for pressing said valve firmly to its seat. y

3. ln an internal combustion engine, the combination of a valve casing, arotary valve body received therein, said casing having a port communicating with the power chanr ber, the edges or said port constituting seats for the valve, spindles projecting from the endsv ol said valve, said spindles being mounted in bearings in the Walls of the valve casing, said bearings being of` greater size than the spindles to allow the valve to move laterally for adjusting the same, and

resilient means-for forcing said valve body snugly against said seat. A

4f. ln an internal combustion engine, .the combination of Ia valve casing, a. rotary valve body therein, means for mounting said valve body to enable the same to have side play for purposes of adjustment,the said casing having a port leading to a power charnber, the edges of said port constituting a seat for the valve body, a shoe carrying `a plurality ort anti-iction rollers engaging the outer tace o-said valve,`and resilient means for pressing said rollers against the valve to force the saine Yinto Vsnug engagementvwith saidseat. l f,

' 5. In an internalv combustion engine, the

- combinaion of 'a valve. casing? a, loifm'y lneans for mosmtng lle Sumo to allow it lo have a, Garmin' .amouno: Sido wstmg -ho wlw@ royaal www o port loading 'lo Woolf' I ed'leso smal' por@ ming flsont;

,va ve, a volmo @Homolog lougimlwly tramways@ proecf said. volvo and. havin@ i Same. adjacent *he tions on moines, of

Aviljve, a plurality off @mtl-fiction rollers Carried. by smid Shoo, the spindles of said .rollers being Supported by' said projections, means extending through 'the Wall 05": the valve casing and engaging said shoe to hold. said shoe aganst'movemenlf, and reslont mens mounted nsflo of will caongf and engaging 'the Shoo to pi sa the same zigal'lst the valvo folco tlm volvo "Dolly Sungly against ils seat 6, ll@L m1 nliomml oomlmsl'on eugne, pressure shoe having pal?? of transverse projeoons extending' 'from on@ face, each of safcl pyojgeolols llmmg a boar openlnE the Said oponlngs oolw :wronged in longilrukllmll olinol'nont und an anldfrlctlon lfollex having j..m1)fflls mounefl in said bearing l lo. an internal oon'lbuslon cugino? 1L powlro Shoo, having a pluffally oll pairs of zrfmsvergo pl'ojoollons el ailing rom one mreyonch ol Said projections hawng; one o1' moro' bem-ing opl, L gs, the bearing openings of each pair boing arranged n longitudinal ullmment, and anti-friction rollers having journals mounted in Said bearing openings. ln testimony whereof l havo signed my nume to this Specification fm the possono@ o' two subsc'bing .vilznesez 

